User Manual

49
T89C51AC2
Rev. B – 19-Dec-01
Table 16. SADE N Register
SADEN (S:B9h)
Slave Address Mask Regi ster
Rese t Value = 0000 0000b
Not bit addressable
Table 17. SADDR Register
SADDR (S:A9h)
Slave Address Register
Rese t Value = 0000 0000b
Not bit addressable
Table 18. SBUF Register
SBUF (S:99h)
Serial Data Buffer
Rese t Value = 0000 0000b
Not bit addressable
76543210
Bit
Number
Bit
Mnemonic Description
7-0 Mask Data for Slave Individual Address
76543210
Bit
Number
Bit
Mnemonic Description
7-0 Slave Individual Address
76543210
Bit
Number
Bit
Mnemonic Description
7-0 Data sent/received by Serial I/O Port